IDM Mod Resistors

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Jan 6, 2010 | 09:55 AM

#16

Talyn

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Joined: Oct 2003

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From: Ashland City, TN

You are supposed to have metal film resistors on them.
Using cheepo's is just asking for disaster. Using a 1/4 or a 1/2 watt over the 1/8th watt will give you more longevity on them as well.
Your changing around the voltage in the system with a resistor. You want it to be right, otherwise your creating excess heat, which will kill the resistor.

Jan 6, 2010 | 10:20 AM

#17

chicagodragon

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From: metairie, LA

for the IDM, a metal film resisto is only used because of space. the 100-140v is not passing through the resistor.

Jan 9, 2010 | 04:22 PM

#18

bpayne88

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Joined: Dec 2009

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so you can use the say 75 ohm 1/4 or 1/8 watt 5%resistor from raido shack?

Jan 9, 2010 | 04:25 PM

#19

chicagodragon

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From: metairie, LA

the % is the accuracy of the resistor. put it on an ohm meter to see if it is a true 75k ohms, you might have to put a 1 or 2k inline to get 75k.

Jan 12, 2010 | 01:11 PM

#20

blue66tang95f150

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Anybody want to help me find an IDM. I checked all the wrecking yards around here and they were all either bought by one guy, or want 200+ bucks for one. I thought they would be like around 50 bucks?

Jan 12, 2010 | 01:50 PM

#21

chicagodragon

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From: metairie, LA

rebuilt ones on ebay for 169 95 96 Ford 7.3L Powerstroke Injector Driver Module IDM:eBay Motors (item 170373649067 end time Jan-21-10 03:00:00 PST)

Jan 12, 2010 | 07:40 PM

#22

blue66tang95f150

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Yeah I saw those, I was hoping to find just a cheap used one I could rip into and do the IDM mod. I know I know I am cheap.

Jan 12, 2010 | 09:45 PM

#23

Oversize

Laughing Gas

Joined: Feb 2009

Posts: 921

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From: Denver CO

So whats the verdict as Im not an electrical guru do we need the special resistors or what?

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Jan 13, 2010 | 09:40 AM

#24

chicagodragon

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From: metairie, LA

i see no need for it.before i did the mod, i researched it for as many pic as i could find, and they almost always used cheap resistors. just test them first to make sure they are a true 75k. you may need to put two in line, i did.